Muntin bar



Jail- 1931- A. c. ARMSTRONG 1,789,280

MUNTIN BAR Filed May 26, 1928 INVENTOR Adz/16022 6: Armszm/y BY w/LAM ATTORNEY Patented Jan. 13, 1931 UNITED STATES PATENT OFFI E ADDISON c. ARMSTRONG, OFSBALTIMORE, MARYLAND, Assmnon 'IO CAMPBELL METAL wmnow CORPORATION, or BALTIMORE, 'MARYLAND, A CORPORATION or MARY- LAND mun'rm BAR Application filed. May 2631928. Serial No. 280,779.

' This invention relates to a method wherewithout breaking either bar at the interseccheaply and firmly locked together.

An illustrative example of the invention is shown in the accompanying drawings in which Fig. 1 is a perspective View showing the intersecting muntin bars connected to-, gether, but with the glass stops removed; Fig. 2 is a corresponding view showing glass stops in place; Fig. 3 is aperspective View showing portions oftwo bars as they are about to be assembled, and 'Fig. 4 is a sectional View on line 4-4 of Fig. 2 illustrating the method of locking the bars'to'gether. The muntin bars are made of uniform cross section from flat metal plates. These plates are bent by rolling or any other appropriate means to leave flat portions 10 con-V vnected together by a U-shaped portion 12.

At points of intersection one bar (which is the bar 14 shown in Fig. 3) has the flat portions 10 cut away for a distance exactlye ual to the-total width of the muntin bar.

e other bar 16 has formed through its I U-shaped portion, a notch '18 adapted to receive the U-shaped portion 12 of bar 14.

shown in" 2 glass 'stop 22 is continuous and the ends. of glass stops 24 and 26 butt 'up againstthe sides of glass stop 22. tion point and whereby the bars may be Amuntin bar-construction comprising two i intersecting bars each having a flat portion and a U-shaped portion, one of said bars hav-,

ing its flat portion cut away to receive the fiat portion of the second bar, andthe second bar having its U-shaped portion cut away'to receivethe U-shaped POItlOII'Qf the first bar and said first bar having the sides of its U-shaped portion spread apart in. between. :the sides of the 'U-shaped portionof the second bar to look the bars together.

I ADDISON 0.;ARMSTRONG.

-When bar14 is placed over the bar 16 its' U-shaped portion 12 will enter the notch I I 18 and the flat portions 10 of bar 16 will fill the cut out space in bar 14 as illustrated in Fig. 1. The bars thus in place are turned over, and the walls of U-shaped ortion-r12 of bar 14 which lie in notch 18 are ent apart as indicated at 20in Fig. 4, whereby the two pieces are firmlylockedtogether; This bendmg can readily be done by theuse of any blunt instrument of appropriate shape. Any cracks oropenings will be filled by paint or by the putty which is inserted when the l I window is glazed. The glass stops arecpreferably not made continuousbut those running one direction butt against those run- 11mg 111. the other direction; for example, as

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